nvc0: reduce likelihood of collision for real buffers on Kepler

Reduce likelihood of collision with real buffers by placing the
hole at the top of the 4G area. This fixes some indirect draw+compute
tests with large buffers.

Suggested by Ilia Mirkin.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

diff --git a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
index b1450f80023ce93f0969ed74965d0c2aab475679..04ede3e51e1f171f2097d0bb88379f7ed3e6fc3b 100644 (file)
--- a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
+++ b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
@@ -96,9 +96,9 @@ nve4_screen_compute_setup(struct nvc0_screen *screen,
     *  accessible. We cannot prevent that at the moment, so expect failure.
     */
    BEGIN_NVC0(push, NVE4_CP(LOCAL_BASE), 1);
-   PUSH_DATA (push, 1 << 24);
+   PUSH_DATA (push, 0xff << 24);
    BEGIN_NVC0(push, NVE4_CP(SHARED_BASE), 1);
-   PUSH_DATA (push, 2 << 24);
+   PUSH_DATA (push, 0xfe << 24);
 
    BEGIN_NVC0(push, NVE4_CP(CODE_ADDRESS_HIGH), 2);
    PUSH_DATAh(push, screen->text->offset);